REPORT ON SCOTTISH ORNITHOLOGY FOR 1907 207 



Uria troile (Guillemot). — Very numerous at Sule Skerry on 17th 

 May. On 26th October a few off Barra (p. 9). 



TJ. GRYLLE (Black Guillemot). — At Pentland Skerries a number 

 in summer plumage, " winter birds are grey." Far less 

 abundant in the Shetlands than the Orkneys (p. 3). 



Fratercula arctica (Puffin). — One immature in a dying condi- 

 tion came into the courtyard at Pentland Skerries on 7 th 

 January. Returned to Craigleith on 7th April, the same day 

 as last year. Numbers swimming about at Pentland Skerries, 

 none yet in rocks, nth April. Great numbers off Sule 

 Skerry on 9th, and landed on i6th April. Sitting on rocks 

 at Pentland Skerries, 13th. Getting scarcer at Sule Skerry, 

 9th August. 



CoLYMBUS GLACiALis (Great Northern Diver). — Bute, 14th April (i). 

 Three at St. Andrews on 19th April. On 26th October off 

 Barra, very numerous (p. 9). 



C. ARCTicus (Black-throated Diver). — One shot off the mouth 

 of the Don, Aberdeenshire, 30th January (A.S.N.H., 1907, 

 p. 250). Nest with usual complement of eggs on 29th May 

 in Outer Hebrides (p. 29). 



C. SEPTENTRiONALis (Red-throated Diver). — Arisaig, 14th May, 

 laying. One hurtling down to sea with incredible speed in the 

 Outer Hebrides, "and the noise made by the air rushing 

 through the primaries sounded like the roar of an express 

 train " (p. 30). 



PoDiciPES CRiSTATUS (Great-crested Grebe). — One at Spiggie 

 (Shetland) on nth January, "the first seen here." Pairing 

 at Harelaw Dam (Renfrew) on 23rd March. 



P. AURiTUS (Slavonian Grebe). — At Arisaig on 13th May in full 

 summer plumage. Two at St. Andrews, 5th December. 



P. NiGRicoLLis (Eared Grebe). — One (c?) at Dunbar, 3rd January 

 (A.S.N.H., 1907, p. 183). 



P. FLUviATiLis (Little Grebe). — One at Mishnish, Mull, 28th 

 February. Lays at Kirkliston, 14th April. Has eggs at Lake 

 of Menteith, 15th May. In "song" at Hogganfield, Glasgow, 

 22nd September. "Undoubtedly on the increase" in the 

 Outer Hebrides (p. 30). 



Procellaria pelagica (Storm Petrel). — Heard among stones and 

 holes, 23rd May, Sule Skerry. One found on the shore at 

 Kilnaughton, near Port Ellen, Islay^ 4th August. One just able 

 to fly caught at Skaddan Lighthouse, Fair Isle, 2nd October 



(P- 85). 



